/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.http.impl.client.integration;
  
  import java.net.URI;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.http.HttpHost;
  import org.apache.http.client.ClientProtocolException;
  import org.apache.http.client.methods.CloseableHttpResponse;
  import org.apache.http.client.methods.HttpGet;
  import org.apache.http.impl.client.CloseableHttpClient;
  import org.apache.http.impl.client.IdleConnectionEvictor;
  import org.apache.http.localserver.LocalServerTestBase;
  import org.apache.http.util.EntityUtils;
  import org.junit.Test;
  
  public class TestIdleConnectionEviction extends LocalServerTestBase {
  
      @Test
      public void testIdleConnectionEviction() throws Exception {
          this.connManager.setDefaultMaxPerRoute(10);
          this.connManager.setMaxTotal(50);
  
          final HttpHost target = start();
  
          final IdleConnectionEvictor idleConnectionMonitor = new IdleConnectionEvictor(
                  this.connManager, 50, TimeUnit.MILLISECONDS);
          idleConnectionMonitor.start();
  
          final URI requestUri = new URI("/random/1024");
          final WorkerThread[] workers = new WorkerThread[5];
          for (int i = 0; i < workers.length; i++) {
              workers[i] = new WorkerThread(httpclient, target, requestUri, 200);
          }
          for (final WorkerThread worker : workers) {
              worker.start();
          }
          for (final WorkerThread worker : workers) {
              worker.join();
              final Exception ex = worker.getException();
              if (ex != null) {
                  throw ex;
              }
          }
          idleConnectionMonitor.shutdown();
      }
  
      static class WorkerThread extends Thread {
  
          private final CloseableHttpClient httpclient;
          private final HttpHost target;
          private final URI requestUri;
          private final int count;
  
          private volatile Exception ex;
  
          public WorkerThread(
                  final CloseableHttpClient httpclient,
                  final HttpHost target,
                  final URI requestUri,
                  final int count) {
              super();
              this.httpclient = httpclient;
              this.target = target;
              this.requestUri = requestUri;
              this.count = count;
          }
  
          @Override
          public void run() {
              try {
                  for (int i = 0; i < this.count; i++) {
                      final HttpGet httpget = new HttpGet(this.requestUri);
                     final CloseableHttpResponse response = this.httpclient.execute(this.target, httpget);
                     try {
                         final int status = response.getStatusLine().getStatusCode();
                         if (status != 200) {
                             throw new ClientProtocolException("Unexpected status code: " + status);
                         }
                         EntityUtils.consume(response.getEntity());
                         Thread.sleep(10);
                     } finally {
                         response.close();
                     }
                 }
             } catch (final Exception ex) {
                 this.ex = ex;
             }
         }
 
         public Exception getException() {
             return ex;
         }
 
     }
 
 }